CN103748310B - Superhard construction - Google Patents
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- CN103748310B CN103748310B CN201280025859.7A CN201280025859A CN103748310B CN 103748310 B CN103748310 B CN 103748310B CN 201280025859 A CN201280025859 A CN 201280025859A CN 103748310 B CN103748310 B CN 103748310B
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- 238000010276 construction Methods 0.000 title claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 96
- 239000000758 substrate Substances 0.000 claims abstract description 89
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 3
- 238000005520 cutting process Methods 0.000 claims description 42
- 229910003460 diamond Inorganic materials 0.000 claims description 33
- 239000010432 diamond Substances 0.000 claims description 33
- 238000000034 method Methods 0.000 claims description 7
- 238000009826 distribution Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 description 11
- 238000005245 sintering Methods 0.000 description 11
- 239000003054 catalyst Substances 0.000 description 9
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 9
- GJNGXPDXRVXSEH-UHFFFAOYSA-N 4-chlorobenzonitrile Chemical compound ClC1=CC=C(C#N)C=C1 GJNGXPDXRVXSEH-UHFFFAOYSA-N 0.000 description 6
- 229910052582 BN Inorganic materials 0.000 description 6
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 6
- 238000003491 array Methods 0.000 description 6
- 229910017052 cobalt Inorganic materials 0.000 description 6
- 239000010941 cobalt Substances 0.000 description 6
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 6
- 208000037656 Respiratory Sounds Diseases 0.000 description 5
- 239000013078 crystal Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000011435 rock Substances 0.000 description 4
- 208000035874 Excoriation Diseases 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 229910000531 Co alloy Inorganic materials 0.000 description 2
- 239000011230 binding agent Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012634 fragment Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910052758 niobium Inorganic materials 0.000 description 2
- 239000010955 niobium Substances 0.000 description 2
- 230000002028 premature Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- 235000019589 hardness Nutrition 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24D—TOOLS FOR GRINDING, BUFFING OR SHARPENING
- B24D7/00—Bonded abrasive wheels, or wheels with inserted abrasive blocks, designed for acting otherwise than only by their periphery, e.g. by the front face; Bushings or mountings therefor
- B24D7/18—Wheels of special form
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/56—Button-type inserts
- E21B10/567—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts
- E21B10/573—Button-type inserts with preformed cutting elements mounted on a distinct support, e.g. polycrystalline inserts characterised by support details, e.g. the substrate construction or the interface between the substrate and the cutting element
- E21B10/5735—Interface between the substrate and the cutting element
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Golf Clubs (AREA)
- Laminated Bodies (AREA)
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
The invention discloses a kind of superhard construction, it includes the ultra hard material layer of substrate and formation on the substrate.One in the interface surface of the substrate or the interface surface of the ultra hard material layer includes multiple thrusts separated from interface surface protrusion, and the interface surface between the thrust separated is uneven.Another superhard construction includes multiple thrusts protruded from the interface surface, and the thrust is abutted on the surface that thrust is protruded along its edge with one or more adjacent thrusts, and in all interface surfaces or most of interface surface extension.One or more surfaces of all thrusts or most of thrust, extension and/or the extension in plane extend with the center longitudinal axis of the substrate via it substantially not parallel one or more planes in the plane substantially not parallel one or more planes for the outer surface exposed with the ultra hard material layer.
Description
Technical field
Present document relates to superhard construction and its manufacture method, more specifically but not exclusively to including by polycrystalline diamond
（PCD）It is attached to the structure of substrate, and as piercing ground for the cutting insert or cutting element of drill bit.
Background technology
Polycrystalline superhard material, such as polycrystalline diamond（PCD）And polycrystal cubic boron nitride（PCBN）, can be widely applied to each
For cutting, machining, drilling or such as rock, metal, ceramics, composite and containing as wood material are decomposed in kind of instrument
Hard or coarse material.More specifically, the tool inserts of the cutting element form including PCD material are widely used in brill
Head, oil or natural gas are extracted to pierce ground.Because the fracture of superhard material, including spallation or peeling, or instrument are embedded in
The abrasion of thing, can limit the working life of sintered carbide tools insert.
Cutting element such as rock drill bit or other cutting elements, which typically has, includes interface edge/interface table
The main body of the substrate forms in face, and form the superhard material for the interface surface cutting lay that substrate is for example attached to by sintering process
Material.Substrate is generally made up of Wc-Co alloys, and Wc-Co alloys are sometimes referred to as cemented tungsten carbide；And ultra hard material layer
Typically polycrystalline diamond（PCD）, polycrystal cubic boron nitride（PCBN）Or such as thermally-stabilised polycrystalline diamond is thermally-stabilised
Product（TSP）Material.
Polycrystalline diamond（PCD）It is superhard material（Also referred to as super hard abrasive）An example, it include it is a large amount of substantially
The diamond crystalses of intergrowth, form the skeleton block in gap between restriction diamond particles.PCD material is typically comprised at least
The diamond of about 80% volume ratio, conventionally by the super-pressure for making the aggregation block of diamond crystalses be subjected to for example being greater than about 5GPa
At least about 1200 DEG C of temperature is made.The material in all or part of filling gap can be referred to as filler or binder.
PCD is generally formed in the presence of the sintering aid of such as cobalt, and sintering aid can promote the friendship of diamond crystalses
Mutually growth.Due to dissolving diamond to a certain extent and the redeposited function of catalysis diamond, for being adapted to for PCD
Sintering aid be also commonly referred to as solvent-catalyst material of diamond.Solvent-catalyst of diamond it should be understood that
To be that under the conditions of the stable pressure and temperature of diamond heating power, can promote between diamond film or guiding diamond particles
Diamond-diamond intergrowth material.Therefore, the gap in the PCD products of sintering can completely or portion
Divide and filled by remaining solvent-catalyst material.Most typically, PCD is formed generally in cobalt-cemented tungsten carbide substrate, should
Substrate provides cobalt solvent-catalyst source for PCD.The material of the basically identical intergrowth between diamond particles can not be promoted
Itself can be with diamond crystalses formation strong chemical bond, but is not suitable as solvent-catalyst of PCD sintering.
It can be formed for forming the cemented tungsten carbide of suitable substrate by tungsten carbide particle, the tungsten carbide particle leads to
Cross and mix tungsten carbide particle/crystal grain and cobalt, then they, which are heating and curing, is dispersed in cobalt matrix.In order to be formed
The cutting element of ultra hard material layer with such as PCD or PCBN, diamond particles or crystal grain or CBN crystal grain are with burning
Knot tungsten carbide body is adjacent in the heating resisting metal shell for being placed on such as niobium shell, and is subjected to high pressure-temperature so as in diamond
Intercrystalline bonding is formed between crystal grain or between CBN crystal grain, CBN layers of polycrystalline ultrahard diamond or polycrystalline is formed.
In some cases, substrate can be fully cured before being combined with ultra hard material layer；And in other cases,
Substrate can be immature（ green ）, i.e., it is not fully cured.In the latter case, in the sintering of HTHP
During substrate can be fully cured.Substrate can be the form of powder, it is possible to for sintering the burning of ultra hard material layer
Solidify during knot.
Cobalt has the thermal coefficient of expansion for differing markedly from diamond, therefore, in use once heating polycrystalline diamond
Cobalt expansion in stone material, the substrate combined with PCD materials, and can cause and form crackle in PCD materials, cause
PCD layers of Quality Down.
Residual stress is produced in order to reduce the interface between substrate and superabrasive layer, it is known that in the interface surface in substrate
Form multiple coaxial annular rings protruded from flat interface surface.Due to the thermal coefficient of expansion and the heat of ultra hard material layer of substrate
Difference between the coefficient of expansion, when being cooled down after cutting element is sintered through HTHP, these layers can be shunk with different rates.Draw
Power region is formed in the upper surface of ring, and pressure span forms in the depression between these rings/be recessed interior.Therefore, make
In when crackle starts growth, it can grow along the whole upper surface ring-type of the annular ring exposed to pulling force, or
It can be grown along the whole ring-shaped depression between the protrusion ring of pressure, cause cutting element premature failure.
It is also known that cutting element substrate interface includes multiple thrusts separated, the thrust has from flat
Interface surface protrude relatively flat upper surface.
The common issue of influence cutting element is fragment, peeling, portion fractures and the crack of ultra hard material layer.Another problem
It is the propagation of the crack along the interface between ultra hard material layer and substrate and the crackle through interface surface.These problems can be with
Ultra hard material layer premature failure is caused, thus shortens the working life of cutting element.Therefore, such as rock drilling high abrasion or
It is necessary to have ultra hard material layer and the cutting element for extending working life in the application of high impact forces, wherein producing crack, broken
Piece and the possibility of fracture are lowered or can control.
The content of the invention
In terms of first aspect, the invention provides a kind of superhard construction, the superhard construction includes：
Substrate, it includes outer surface, interface surface and the longitudinal axis；And
Ultra hard material layer, it is formed on the substrate and with the outer surface exposed, the outer surface from its extension
With the interface surface for the interface surface for being attached to the substrate；
Wherein, one in the interface surface of the substrate or the interface surface of the ultra hard material layer includes：
The multiple thrusts separated protruded from the interface surface, the interface between the thrust separated
Surface is uneven.
In some embodiments, between the thrust separated all interface surfaces or most of interface
Surface is not curved surface, but the plane in the outer surface exposed with the ultra hard material layer is substantially not parallel one or more
Extend in individual plane.
In some embodiments, between the thrust separated all interface surfaces or most of interface surface
All extend in the plane extended with the center longitudinal axis of the substrate via it substantially not parallel one or more planes.
In some embodiments, one or more surfaces in all thrusts or most of thrust, with institute
State in the plane of the outer surface that ultra hard material layer exposes substantially not parallel one or more surfaces extension and/or with
Extend in the plane that the center longitudinal axis of the substrate extend via it substantially not parallel one or more planes..
In some embodiments, around the substrate center longitudinal axis the ultra hard material layer thickness substantially with
Ultra hard material layer is identical in the thickness of outer surface.
In terms of second aspect, the invention provides a kind of superhard construction, the superhard construction includes：
Substrate, it includes periphery and interface surface and the longitudinal axis；And
Ultra hard material layer, it is formed on the substrate and with the outer surface exposed, the outer surface by its extension
With the interface surface for the interface surface for being attached to the substrate；
Wherein, one in the interface surface of the substrate or the interface surface of the ultra hard material layer includes：
The multiple thrusts protruded from the interface surface, the thrust is on the surface that thrust is protruded along its edge
Abut, and extend in all interface surfaces or most of interface surface with one or more adjacent thrusts；And
Wherein, one or more surfaces of all thrusts or most of thrust, reveal with the ultra hard material layer
Extension and/or at the center with the substrate in the plane of the outer surface gone out substantially not parallel one or more planes
Extend in the plane that the longitudinal axis extends via it substantially not parallel one or more planes.
In terms of the third aspect, the invention provides a kind of earth-boring bits, it includes a main body, and conduct is provided with the main body
The above-mentioned superhard construction of cutting element.
Brief description of the drawings
Now by example mode and nonrestrictive embodiment is described in reference to the drawings.In the accompanying drawings：
Fig. 1 is the stereogram of cutting element；
Fig. 2 a are stereogram of multiple thrusts in free space in Fig. 1；
Fig. 2 b are the schematic plan views of the substrate of cutting element in Fig. 1；
Fig. 2 c are schematic sectional view of the substrate along A-A axles shown in Fig. 2 b；
Fig. 2 d are the schematic perspective views of the substrate of cutting element in Fig. 1；
Fig. 3 is the stereogram of the cutting element according to an embodiment；
Fig. 4 is the stereogram of substrate according to another embodiment；
Fig. 5 a are the stereograms of the substrate of cutting element according to another embodiment；
Fig. 5 b are the schematic plan views of the substrate of Fig. 5 a cutting element；And
Fig. 5 c are schematic sectional view of the substrate along A-A axles shown in Fig. 5 b.
Embodiment
In embodiments described herein, when thrust or depression are described as being formed in substrate surface, it should
Them are interpreted as also with being formed on the surface of the ultra hard material layer of substrate interface interface surfaces, with being formed in substrate
Opposite feature.Further, it should be understood that ground is, the back side of interface surface or reverse side are the shapes on the ultra hard material layer with substrate interface
Into so that two interfaces can form the cooperation of matching.
" superhard material " used herein is a kind of material with least about 28GPa Vickers hardnesses.Diamond
And cubic boron nitride（ cBN ）Material is all the example of superhard material.
" superhard construction " used herein refers to main body including polycrystalline superhard material and the structure of substrate in connection.
Polycrystalline diamond used herein（ PCD ）It is to include the polycrystalline superhard material of a large amount of diamond particles（ PCS ）
One kind, it is largely bonded each other, and wherein the content of diamond at least accounts for the volume ratio of the material 80%.
In an embodiment of PCD materials, the gap between diamond crystalses can be at least partly by including for Buddha's warrior attendant
The binder of the catalyst of stone is filled." gap " used herein or " gap area " are the diamond crystalline substances in PCD materials
Region between grain.In the embodiment of PCD materials, gap or gap area can be substantially or partly by Buddha's warrior attendants
Material filling beyond stone, or they can be substantially empty.PCD materials can include at least one catalyst material
The region being removed from gap, reserves the interstitial void of diamond particles.
PCBN used herein（Polycrystal cubic boron nitride）Material refers to including being distributed in including metal or ceramics
The cubic boron nitride of Medium Culture（ cBN ）One kind of the superhard material of particle.PCBN is an example of superhard material.
" catalyst material " for superhard material can promote growth or the sintering of superhard material.
Terms used herein " substrate " refers to being formed any substrate of ultra hard material layer thereon.For example, using herein
" substrate " can be the transition zone formed on other substrates.In addition, the term such as terms used herein " radial direction ", " ring "
It is not intended to and feature is limited to standard round.
The superhard construction 1 being shown in the drawings can be adapted to the cutting insert for being used for example as earth-boring bits.
In all of the figs, identical reference represents identical feature.
In the embodiment shown in Fig. 1, cutting element 1 include substrate 10 and formed in substrate 10 it is super
Hard material layer 12.Substrate can be formed by the hard material of such as cemented tungsten carbide.Superhard material can be such as polycrystalline gold
Hard rock（ PCD ）, polycrystal cubic boron nitride（ PCBN ）Or such as thermally-stabilised PCD thermally-stabilised product（ TSP ）.Can be
Cutting element 1 is arranged on such as drag bit body（It is not shown）Bit body in.Ultra hard material layer back to substrate exposes
Upper surface form cutting face 14, when in use, cutting face 14 performs cutting function together with its edge 16.
It is the interface surface 18 having a common boundary with ultra hard material layer 12 in one end of substrate 10, ultra hard material layer 12 exists
The interface surface is in connection.Substrate 10 is usually cylinder, and with an outer surface 20 and upper outer periphery
Edge 22.In the embodiment shown in Fig. 1, interface surface 18 includes multiple the first arrays for being arranged on substantially annular
In and the thrust 24 separated with neighboring 22 separately, and be radially disposed in the first array 24
The thrust 26 of two or internal basic annular arrays.
As shown in Fig. 1, Fig. 2 a -2d, in this embodiment, the thrust 24,26 separated is arranged on
In two arrays, described two arrays are disposed around in the substantially annular path of the center longitudinal axis of substrate 10.However,
The invention is not limited in the geometry, for example, the setting of thrust 24,26 can be in interface surface 18
Orderly other than ring type array, or thrust can be in random distributions thereon, rather than substantially annular or other orderly battle arrays
Column distribution.In addition, in the embodiment that thrust is set with annular array, these thrusts can be with ovalisation or not right
Claim, or the center longitudinal axis of substrate 10 can be deviateed.Although also, the thrust 26 of the local array shown closer to
External array 24, rather than close to the center longitudinal axis of substrate, the thrust 26 of local array can in other embodiments
With closer to center longitudinal axis.
Thrust 26 in second array can be between the thrust 24 of the first array spatial radial align.It is prominent
It can staggeredly, make the thrust in an array and the space in next array to play thing 24,26 and the space
It is overlapping.This three-dimensional feature in interface surface staggeredly or the distribution of non-alignment contributes to distribution pressure and tension force, and/or
Reduce the size of stress field, and/or the growth of crackle is prevented by blocking the continuous path of crack growth.
As shown in Fig. 1, Fig. 2 a -2d, in these embodiments, all thrusts or most of thrust
24th, 26 be formed so that thrust all or most of surface and ultra hard material layer 12 cutting face 14 substantially
It is not parallel or substantially not parallel with plane that the substrate longitudinal axis extends via it.Moreover, in Fig. 1-3 and Fig. 5 a-5c
In shown embodiment, the interface surface 18 in the space between thrust is uneven.This can be interpreted
But it is not limited to, it is one or more such uneven, different, irregular, coarse, no with peak and low ebb covering
Flat and/or rough gap.This set is considered to suppress to pass along the continuous crackle of interface surface 18
Broadcast, and increase the contact area between the interface of substrate 10 and the interface of ultra hard material layer 12.In addition, this set quilt
Think that " elasticity " ripple in interfering material is formed, and make the crack deflection of interface.These by each thrust 24,
The depression of 26 spaces separated with adjacent thrust or injustice can be in some embodiments uniform, other
Can be uneven in embodiment.
Thrust 24,26 can have smooth curved upper surface or can have inclined upper surface.One
In a little embodiments, thrust 24,26 can somewhat trapezoidal or taper in shape, protruded out close to them
It is most wide at the interface surface come.
In Fig. 1 and Fig. 2 a-2d, the substantially equidistant separation of thrust 24,26 is substantially annular at each
In array/and around each substantially annular array equidistant separation, each thrust 24,26, which is located at, has same diameter
Given array in.But, thrust 24,26 can be formed as any desired shape, as described above, and each other with
Uniformly or non-uniformly mode is separated, so as to change stress field in interface surface 18.Such as Fig. 1 and Fig. 2 implementation
Shown in mode, the thrust 24 in external array is bigger than the size of the thrust in array internally.But, these are relative
Size can be overturned, or the thrust 24,26 in two arrays can be substantially uniform size, or various sizes
Mixing.
In Fig. 1 and Fig. 2 a-2d embodiment, the quantity for the thrust 24 that external array includes is internal layer
Twice, for example, be 10 projections and 5 projections respectively.This enables cutting element 1 to have false axial symmetry, thus
Freely by cutting head（ cutter ）It is positioned in instrument or drill bit, wherein the cutting head can make without special positioning
With.Thrust 24,26 is positioned and formed in this way, i.e., they block cracks through interface surface 18 and along
Its one or more continuous path propagated.In addition, in some embodiments, these thrusts and/or therebetween
The all or most at interval, and without it is any with expectation put on cutting element 1 any load it is basic
Perpendicular or parallel surface, also without any surface substantially vertical or parallel with its any outer surface.
The setting of thrust 24,26 and shape and space therebetween can influence the stress in cutting element 1
Distribution, and for example by prevent or deflect through among thrust 24,26, the crack of the stress area on or near
Growth, can improve the resistance of cutting element fracture growth, more specifically, to the crack growth along interface surface 18
Resistance.
In the embodiment shown in Fig. 3, in the thickness of the ultra hard material layer in the center longitudinal axis region around substrate 10
Degree, may be substantially the same with the thickness of the superhard material in the edge of ultra hard material layer 12.This to be exposed in use
The volume and area of the superhard material of working surface will not be substantially reduced with the development of abrasion, thus extend cutting element 1
Service life.In addition, when in axially loaded, it helps to strengthen cutting element 1.Moreover, it helps to reduce or base
The possibility for forming groove wear in use is eliminated in sheet.
Another embodiment of substrate 50 and interface surface 51 is shown in Fig. 4.The interface of substrate 50
Surface 51 includes the row of multiple adjacent thrusts 54, and the shape per a line is substantially tapered, and along thrust 54
Prominent surface 50, along the side of its bottom, is abutted with one or more adjacent thrusts.Preferably
In, all thrusts 54 or most of thrust 54 do not have with by the cutting face of superabrasive layer in connection（Do not show
Go out）Almost parallel any surface, almost parallel any of the plane that also extends via it without the longitudinal axis with substrate 50
Surface.Thrust 54 can be higher than other thrusts with duplicate height, or the height of some thrusts.
In another embodiment（It is not shown）, it is not whole interface surface 18,51 all shown in Fig. 4
Thrust 54 is covered, and only most of interface surface 18,51 can be covered by adjacent thrust 54, and projection
Arbitrary interface surface 18,51 that is between thing 54 or not covered by thrust 54 can be uneven, such as scheme
Shown in 1-3.
Fig. 5 a -5c show the further embodiment of substrate 100.The embodiment and Fig. 1-2d institutes
The difference for the embodiment shown is, the shape of the thrust 24,26 extended from interface surface 18 be it is different,
And the quantity of the thrust 24 in external array is less than the quantity shown in Fig. 1.In the reality shown in Fig. 5 a -5c
Apply in mode, these thrusts 24,26, which have, includes one or more nonplanar peripheral shapes.
In one or more above-mentioned embodiments, what the feature of interface surface 18,51 can be integrally formed,
And substrate is formed by using appropriate mould, the particle for the material for forming substrate is placed in the mould.It is alternative
The uneven surface of ground, thrust and interface surface 18,51 can be formed after substrate has been made, or part
It is made, for example, is made up of traditional processing technology by generating technique.Similar journey can be used to ultra hard material layer 12
Sequence, the cooperation matched with the interface surface of substrate is formed so that the interface surface of correspondingly-shaped is made.
Ultra hard material layer 12 can by such as conventional brazing technology or by traditional HTHP sintering technology with
Substrate is combined together.
If ultra hard material layer 12 by subsequent technique or can be subjected to further HTHP sintering process part
Ground fully filters off catalyst material, then be weakened with above-mentioned interface feature and/or wherein elastic stress wave
The durability of cutting product including substrate and ultra hard material layer can be obtained by further raising.When ultra hard material layer 12 with
When substrate is combined such as by separating and filtering ultra hard material layer 12 from substrate（ leaching ）What is separated is super
Hard material layer 12, can be filtered.In the latter case, after filtering occurs, such as soldering tech or logical is used
Cross and re-sintered using high-temperature and high-pressure technique, ultra hard material layer 12 can be reintegrated into substrate.
Although having been described above and illustrating some embodiments, it should be appreciated that, can make various changes and
Modification.For example, substrate described herein is pointed out by way of example.It should be understood that superhard material can be incorporated into
Other carbide substrates in addition to tungsten carbide substrate, such as by W, Ti, Mo, Nb, V, Hf, Ta and
The substrate that Cr carbide is made.In addition, although in the embodiment shown in Fig. 1 to Fig. 5 c, PCD structures have cutting edge of a knife or a sword
The Bian Hejiao of profit, but embodiment can include side or the PCD structures at angle of taper or beveling with circle.So
Embodiment can reduce internal stress, therefore by improving to cutting element through substrate interface or with unique geometric form
The resistance of crack, fragment and fracture that the ultra hard material layer of shape is produced extends working life.
Claims (19)
1. a kind of superhard construction, the superhard construction includes：
Substrate, it includes outer surface, interface surface and the longitudinal axis；And
Ultra hard material layer, it is formed on the substrate and with the outer surface exposed, the outer surface from its extension and boundary
Face surface；
Wherein, one in the interface surface of the substrate or the interface surface of the ultra hard material layer includes：
The multiple thrusts separated protruded from the interface surface, wherein, the boundary between the thrust separated
Face surface is uneven.
2. superhard construction according to claim 1, wherein, all interface surfaces between the thrust separated
Or most of interface surface is not curved surface, but the plane in the outer surface exposed with the ultra hard material layer it is not parallel one
Extend in individual or more plane.
3. superhard construction according to claim 1, the substrate has a center longitudinal axis, wherein, it is prominent what is separated
All interface surfaces between thing or most of interface surface is played all with the center longitudinal axis of the substrate via it to extend
Extend in the not parallel one or more planes of plane.
4. superhard construction according to claim 1, wherein, the thrust is arranged on around the center longitudinal axis of the substrate
In the array of one or more radial directions.
5. superhard construction according to claim 4, wherein, the thrust is arranged in the first array and the second array,
Second array is radially disposed in first array.
6. superhard construction according to claim 5, wherein, first array and second array are with the substrate
Coaxial.
7. superhard construction according to claim 5, wherein, the quantity for the thrust that first array includes is second gust
Twice of the quantity of the thrust of row.
8. superhard construction according to claim 5, wherein, the thrust in first array and second array
It is interlaced with each other.
9. superhard construction according to claim 1, wherein, the thrust is in the interface surface of the substrate or in institute
State a upper random distribution of the interface surface of ultra hard material layer.
10. superhard construction according to claim 1, wherein, all thrusts or most of thrust it is one or more
Individual surface, in the not parallel one or more surfaces of the plane for the outer surface exposed with the ultra hard material layer extension and/
Or extend in the not parallel one or more planes of the plane extended with the center longitudinal axis of the substrate via it.
11. superhard construction according to claim 1, wherein, around the superhard material of the center longitudinal axis of the substrate
The thickness of layer is identical in the thickness of outer surface with ultra hard material layer.
12. superhard construction according to claim 1, wherein, the ultra hard material layer includes polycrystalline diamond.
13. superhard construction according to claim 1, wherein, the outer surface that the ultra hard material layer exposes is flat.
14. superhard construction according to claim 1, wherein, the height of the thrust is identical.
15. superhard construction according to claim 5, wherein, the thrust ratio in first array is described second
Thrust height in array is higher.
16. superhard construction according to claim 1, wherein, the interface surface of the substrate is the interface of ultra hard material layer
The back side on surface or reverse side so that the cooperation of two interface surface formation matchings.
17. superhard construction according to claim 1, wherein, the superhard construction is cutting element.
18. a kind of earth-boring bits, it includes a main body, is provided with the main body as described in the claim 1 of cutting element
Superhard construction.
19. a kind of method for forming the superhard construction described in claim 1.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201161479248P | 2011-04-26 | 2011-04-26 | |
| US61/479,248 | 2011-04-26 | ||
| PCT/EP2012/057584 WO2012146626A2 (en) | 2011-04-26 | 2012-04-25 | Superhard constructions & methods of making same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103748310A CN103748310A (en) | 2014-04-23 |
| CN103748310B true CN103748310B (en) | 2017-09-01 |
Family
ID=46044661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280025859.7A Active CN103748310B (en) | 2011-04-26 | 2012-04-25 | Superhard construction |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20140087640A1 (en) |
| CN (1) | CN103748310B (en) |
| GB (1) | GB2505575B (en) |
| WO (1) | WO2012146626A2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130081882A1 (en) * | 2011-09-30 | 2013-04-04 | Diamond Innovations, Inc. | Method of characterizing a material using three dimensional reconstruction of spatially referenced characteristics and use of such information |
| GB201322340D0 (en) * | 2013-12-17 | 2014-01-29 | Element Six Abrasives Sa | Super hard constructions & methods of making same |
| US20160311689A1 (en) * | 2013-12-17 | 2016-10-27 | Element Six Limited | Superhard constructions & methods of making same |
| US9970249B2 (en) * | 2014-12-05 | 2018-05-15 | Baker Hughes, A Ge Company, Llc | Degradable anchor device with granular material |
| CN108368729A (en) | 2015-12-14 | 2018-08-03 | 史密斯国际有限公司 | The mechanical caging of cutting element with carbide substrate |
| GB201523149D0 (en) * | 2015-12-31 | 2016-02-17 | Element Six Uk Ltd | Super hard constructions & methods of making same |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR950013501B1 (en) * | 1990-10-05 | 1995-11-08 | 스미토모 일렉트릭 인더스트리즈, 엘티디. | Drill of diamond-coated sintered body |
| CA2060823C (en) * | 1991-02-08 | 2002-09-10 | Naoya Omori | Diamond-or diamond-like carbon-coated hard materials |
| GB2273306B (en) * | 1992-12-10 | 1996-12-18 | Camco Drilling Group Ltd | Improvements in or relating to cutting elements for rotary drill bits |
| EP0655548B1 (en) * | 1993-11-10 | 1999-02-03 | Camco Drilling Group Limited | Improvements in or relating to elements faced with superhard material |
| US6082474A (en) * | 1997-07-26 | 2000-07-04 | Camco International Limited | Elements faced with superhard material |
| US6068913A (en) * | 1997-09-18 | 2000-05-30 | Sid Co., Ltd. | Supported PCD/PCBN tool with arched intermediate layer |
| JP2000054007A (en) * | 1998-07-31 | 2000-02-22 | Sumitomo Electric Ind Ltd | Diamond-sintered body and its production |
| CN101427000A (en) * | 2006-02-23 | 2009-05-06 | 贝克休斯公司 | Backup cutting element insert for rotary drill bits |
| US7604074B2 (en) * | 2007-06-11 | 2009-10-20 | Smith International, Inc. | Cutting elements and bits incorporating the same |
| US7909121B2 (en) * | 2008-01-09 | 2011-03-22 | Smith International, Inc. | Polycrystalline ultra-hard compact constructions |
| EP2467559B1 (en) * | 2009-08-17 | 2017-10-25 | Smith International, Inc. | Improved non-planar interface construction |
-
2012
- 2012-04-25 US US14/009,890 patent/US20140087640A1/en not_active Abandoned
- 2012-04-25 GB GB1317530.2A patent/GB2505575B/en active Active
- 2012-04-25 CN CN201280025859.7A patent/CN103748310B/en active Active
- 2012-04-25 WO PCT/EP2012/057584 patent/WO2012146626A2/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| GB2505575A (en) | 2014-03-05 |
| GB2505575B (en) | 2018-12-19 |
| CN103748310A (en) | 2014-04-23 |
| WO2012146626A2 (en) | 2012-11-01 |
| GB201317530D0 (en) | 2013-11-20 |
| WO2012146626A3 (en) | 2013-11-14 |
| US20140087640A1 (en) | 2014-03-27 |
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